Cloudflare malicious connections to my server?

Hello, i thought cloudflare is used to serve content of webpage, but my website receiving connections like:

Quote:

[Wed Apr 30 05:13:08 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: Site UnavailableCheap%20Fake%20Oakleys%20Sunglassess[/http://Wholesale%20Oakley%20Sunglassess[/http://https://www.facebook.com/pagesstat.php

[Wed Apr 30 05:13:08 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/refstat.php, referer: http://www.mywebsitehere.com/refstat...oc/doc/http://Cheap%20Fake%20Oakleys%20Sunglassess[/http://Wholesale%20Oakley%20Sunglassess[/http://https://www.facebook.com/pagesstat.php

[Wed Apr 30 05:13:12 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/refstat...oc/doc/http://Cheap%20Fake%20Oakleys%20Sunglassess[/http://Wholesale%20Oakley%20Sunglassess[/http://https://www.facebook.com/pagesstat.php

[Wed Apr 30 05:13:16 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/counter, referer: http://www.mywebsitehere.com/counter...x35.de/http://Wholesale%20Oakley%20Sunglassess[/browserstat.php

[Wed Apr 30 05:13:16 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/counter...x35.de/http://Wholesale%20Oakley%20Sunglassess[/browserstat.php

[Wed Apr 30 05:13:17 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/refstat.php, referer: http://www.mywebsitehere.com/refstat...x35.de/http://Wholesale%20Oakley%20Sunglassess[/browserstat.php

[Wed Apr 30 05:13:17 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/refstat...x35.de/http://Wholesale%20Oakley%20Sunglassess[/browserstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/counter, referer: http://www.mywebsitehere.com/counter...ok.com/http://Wholesale%20Oakley%20Sunglassess[/weekstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/counter...ok.com/http://Wholesale%20Oakley%20Sunglassess[/weekstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/refstat.php, referer: http://www.mywebsitehere.com/refstat...ok.com/http://Wholesale%20Oakley%20Sunglassess[/weekstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/refstat...ok.com/http://Wholesale%20Oakley%20Sunglassess[/weekstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/counter, referer: http://www.mywebsitehere.com/counter.../1e324/http://Cheap%20Oakley[/systemstat.php

[Wed Apr 30 05:13:23 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/counter.../1e324/http://Cheap%20Oakley[/systemstat.php

[Wed Apr 30 05:13:24 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/refstat.php, referer: http://www.mywebsitehere.com/refstat.../1e324/http://Cheap%20Oakley[/systemstat.php

[Wed Apr 30 05:13:24 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/refstat.../1e324/http://Cheap%20Oakley[/systemstat.php

[Wed Apr 30 05:13:27 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/counter, referer: http://www.mywebsitehere.com/counter...rowserstat.php

[Wed Apr 30 05:13:27 2014] [error] [client 173.245.53.68] File does not exist: /home/myusername/public_html/404.shtml, referer: http://www.mywebsitehere.com/counter...rowserstat.php

As you can see these are quite frequent connections and IP appears to be Cloudflare: 173.245.53.68 - Whois | Myip.ms

How is that possible that someone quite anonymously spamming me by this into my error_log file and from cloudflare IP?

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